On long drives, use the cruise control to save gas. The gradual acceleration and deceleration improves your fuel efficiency.

Putting luggage and other items on top of your vehicle creates drag. To reduce these effects, put the luggage/items inside of a roof top container or wrap them in a tarp secured by rope. This not only causes less drag, but also protects your items from weather.

Warming up your car in the morning is an old myth. As long as you are not putting the car under excessive loads right away, driving your car under normal conditions will naturally bring the car to optimum operating temperature. Idle warm-up periods waste fuel and add to air pollution.

Keep your tires properly inflated to keep your gas mileage high. Driving with low tire pressure is like riding a bike with a flat. Besides wearing down your tires, it simply wastes energy. Proper inflation levels are determined by the manufacturer, but it's about 32 psi.